Manual Vaillant Control Center VR 65 (page 9 of 12) (English)

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9Installation Instructions for Control Center VR 65

5.3 Installing the VR 65 with a NTC

Note!

To comply with the approvals, the boiler must

be Vaillant ecoTEC if the cylinder NTC solution

is used.

Before installing the NTC, first remove the cylinder con-

trol with two capillary tubes for the cylinder thermostat

and thermal cut out.

The cylinder control is be fitted in one of two ways

(A or B).

• Disconnect the wires (1) from the terminal block of the

cylinder control (a).

• Version A, fig. 5.4:

Unclip the cylinder control (a) and remove it from the

terminal box (see 2, fig. 5.4).

(Version B, fig. 5.5:

To remove the cylinder control (a) release the clips

with two screw drivers as shown in fig. 5.5)

• Remove the capillary tubes (3) of the thermostat and

the thermal cutout from the dry pocket of the

uniSTOR.

Ensure that the capillary tube of the immersion sensor

is not removed.

• Now the NTC can be pushed into the free dry pocket

of the cylinder as shown in fig. 5.6.

• The NTC is wired into the VR 65 as shown in fig. 5.2 or

fig. 5.3.

Fig. 5.4 Removing the cylinder control (Version A)

Legende:

a Cylinder control

b Immersion Heater Control

Fig. 5.5 Removing the cylinder control (Version B)

Legende:

a Cylinder control

b Immersion Heater Control

Fig. 5.6 Installing the NTC

Electrical installation 5

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Vaillant Control Center VR 65 Manual

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